Week 7 - Storge in Cloud Flashcards
What is Amazon EBS?
Amazon Elastic Block Store (Amazon EBS) is persistent and customizable block storage for Amazon EC2 instances, designed to provide high-performance storage that retains data after a machine is powered off.
What are some features of Amazon EBS?
- Persistent and customizable block storage for EC2
- Supports HDD and SSD types
- Per-EC2 service (used with a single machine)
- Replicated within the same Availability Zone
- Transparent encryption for seamless data protection
- Elastic volumes for dynamic resizing
- Supports snapshots for data backups
What is persistent storage?
Persistent storage is any data storage device that retains data after power to the device is turned off.
When should Amazon EBS be used?
Amazon EBS is ideal for:
- Boot volumes and storage for Amazon EC2 instances
- Data storage with a file system
- Database hosts
- Enterprise applications
What is Amazon S3?
Amazon S3 (Simple Storage Service) is a fully managed object storage service that allows you to store a virtually unlimited number of objects in the cloud.
What are some features of Amazon S3?
- Fully managed object cloud storage
- Virtually unlimited object storage capacity
- Redundant data storage within a single region
- Automagical scalability to match growing application needs
- Pay-as-you-go pricing
- Access via URL from anywhere at any time
- Rich security controls
When should Amazon S3 be used?
- Long-term storage (e.g., backups)
- Content delivery (e.g., static website content, media files)
- Big data storage
How does Amazon S3 handle storage growth?
Amazon S3 automatically manages and scales storage behind your bucket as your data grows, allowing you to start immediately without worrying about capacity.
How do you upload data to Amazon S3?
To upload data to Amazon S3, create a bucket in an AWS Region and upload (almost) any number of objects to the bucket.
What are the two styles of S3 Bucket URLs?
- Bucket path-style URL endpoint
- Bucket virtual hosted-style URL endpoint
What is Amazon S3 Glacier?
Amazon S3 Glacier is a secure, durable, and extremely low-cost data archiving service designed for long-term storage with delayed retrieval times.
What are some features of Amazon S3 Glacier?
- Extremely low-cost design for long-term data archiving
- Data retrieval requires several hours
- Pricing varies by AWS Region
- Designed to provide 11 nines (99.999999999%) of durability for stored objects
Why is Amazon S3 Glacier suitable for long-term archiving?
Its extremely low-cost design and high durability make it ideal for long-term storage of infrequently accessed data.
What is Amazon EFS?
Amazon Elastic File System (Amazon EFS) is a fully managed network file storage service designed for use across different machines and availability zones.
What are some features of Amazon EFS?
- Provides file storage over a network
- Designed for use across multiple machines and availability zones
- Fully managed, eliminating storage administration tasks
- Accessible via the AWS Management Console, API, or CLI
- Automatically scales up or down as files are added or removed
- Pay-as-you-use pricing model
